brake light issue

[mcmahon360]

Hi guys, I have a 2001 Aztek, and I am having some issue with my brake lights. The two lower brake lights will not come on when I apply the brakes. The third (top one) works fine. Both the signal lights and hazard lights work fine. I have checked the fuses, blubs are fine because flashers and hazards are working. And I have traced the wiring from the fuse panel to the back, all looks well there too. I even tried replacing the multi-function switch. If anyone has any ideas that could be causing my problem I would be glad to hear them. Thanks in advance.

 

[melsg5]

have you tested the bulb socket contacts for power with a test light or voltmeter?
I assume the bulbs are dual filament, are you sure one of the filaments isn't burnt out?

 

[mcmahon360]

The bulbs are dual filaments, they seem to be working fine because I believe the turn signal uses the same filament (brightest one) as the brake light. I pulled the plug right before the socket there is power for the signals but it doesn't look like there is power for the brake lights?

 

[melsg5]

you are going to have to find a circuit diagram to see where the harness splits between the center high mount light and the tail lights.

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[mcmahon360]

ok thanks for the reply's, not sure where i would find that? but as far as i know and from what i've read it seems like its 2 totaly different circuts there is also 2 brake light switches on the pedal. thanks again

 

[melsg5]

cruise control interrupt switch?

 

[mcmahon360]

yes my cruise control also doesn't work at the moment problem started at the same time.

 

[mcmahon360]

replaced the brake light switch still no luck, also there seems to be power when i test all the sockets at the back?

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